Appendage.

It's still there--and it has friends.

Every day, back and forth, you see that boxcar. In fact, it's been there, unmoving, for nearly a (leap year) month now. Only thing is, as mentioned, it has friends. A few days after the boxcar mysteriously appeared, several flatcars appeared behind it--a whole army of them. If you can consider eight to be sufficient for an army.

Nevertheless, they're there and somehow someone managed to attach them to the back of the boxcar without having to move the boxcar itself, as if the transporter just sunk into the ground back to hell from which it came. Hellcars, perhaps? Yes, it would be a damn good theory if hell was an actual place but because it isn't it's not.

Every day, back and forth, you see that boxcar and its flatcars behind it, seemingly growing appendages to snake into your apartment complex, getting longer and longer the more time passes without its departure. Yes, you see it but does it see you?

It's been cold and raining these past two days so perhaps the boxcar is too busy being cold and rainy to worry about you now you know. You should be busy worrying about being cold and rainy as you pass the boxcar and its flatcar appendage just as the sun wanders down the horizon, unseen behind the grey ink all splattered and covering everything up and leaking onto the ground, making it cold and rainy.